Ultrafine microstructure and hardness in Fe-Cr-Co alloy induced by spinodal decomposition under magnetic field
Ultrafine microstructure and hardness in Fe-Cr-Co alloy induced by spinodal decomposition under magnetic field
复制标题
磁场诱导Fe-Cr-Co合金旋节线分解的超细组织与硬度
DOI:
10.1016/j.matdes.2020.109383
复制
发表时间:
2021-02
影响因子:
8.4
通讯作者:
Ke Han
中科院分区:
文献类型:
--
作者:
Zhaolong Xiang;Lin Zhang;Yan Xin;Bailing An;Rongmei Niu;Masoud Mardani;Theo Siegrist;Jun Lu;Robert E. Goddard;Tiannan Man;Engang Wang;Ke Han
Application of an external magnetic field during heat treatment affects the hardness of magnetic Fe-Cr-Co alloys. The microstructure and composition at atomic scale, as well as the hardening mechanisms need extensive studies. Using atomic resolution STEM, we investigated the effect of a 3 T magnetic field on the spinodal decomposition, as well as microstructure and hardness in step-aged Fe27wt. %Cr15wt. %Co samples. Spinodal decomposition resulted in a homogeneous α phase transforming into an Fe-Co rich α1phase and a Cr rich α2phase. Although α1and α2showed distinct contrast at low magnificationZ-contrast images, close examination at atomic scale of the samples showed no sharp α1/α2interfaces. Inside each phase, composition fluctuations occurred. A 3 T external magnetic field during step aging increased the size of the α1phase and introduced microstructural anisotropy, which is desired for permanent magnet applications, In addition, the spinodal decomposition increased the hardness. Annealing in a 3 T magnetic field decreased the hardness but increased the ductility, which is desirable for manufacturing permanent magnets. The change in hardness values is attributed to the composition fluctuations of Fe, Cr and Co, and we further discuss the mechanisms for composition fluctuations and hardness.
登录
查看更多内容
DOI:
10.1063/1.342241
发表时间:
1988-11
期刊:
--
影响因子:
--
作者:
M. Okada;R. Togashi;S. Sugimoto;M. Homma
通讯作者:
M. Okada;R. Togashi;S. Sugimoto;M. Homma
DOI:
10.1016/j.physb.2019.01.030
发表时间:
2019-05
期刊:
Physica B: Condensed Matter
影响因子:
--
作者:
S. Kondo;H. Nakashima;T. Morimura
通讯作者:
S. Kondo;H. Nakashima;T. Morimura
影响因子:
1.2
作者:
O. SORIANO-VARGAS;E. O. Avila-Davila;V. M. Lopez-Hirata;H. Dorantes-Rosales;J. González-Velázquez
通讯作者:
O. SORIANO-VARGAS;E. O. Avila-Davila;V. M. Lopez-Hirata;H. Dorantes-Rosales;J. González-Velázquez
DOI:
10.2320/jinstmet.j2015012
发表时间:
2015
期刊:
--
影响因子:
--
作者:
近藤 慎一郎;昭憲 枡嵜;兼人 小川;隆夫 森村;弘道 中島
通讯作者:
近藤 慎一郎;昭憲 枡嵜;兼人 小川;隆夫 森村;弘道 中島
影响因子:
2.1
作者:
KANEKO, H;HOMMA, M;THOMAS, G
通讯作者:
THOMAS, G